It's time for exchanges to be considered the safety of their top priority customer funds.Other hacking happens to ordinary,greedy and/or unsuspecting people who trade or try to get the money they don't do.We can only advise ourselves to be extra careful in choosing a good wallet and good exchanges.Of course the system security must be strong,don't let people know what you have (assets such as tokens/coins)and keep your password secure,Private keys are therefore very important